Biomass pellets are presently the most common and well known form of pellets used for fuel. Most wood pellets currently accessible on the market are also premium biomass pellets. Premium biomass pellets are the higher grade of biomass pellet energy. To make a premium grade energy pellet most or all of the bark must be removed from the biomass. Also only certain species of biomass are generally used, these include pine, spruce as well as oak. The reasons for this is a premium quality wood pellet also has to make a very low ash content, usually below 1%. Premium wood pellets must also have a very low moisture percentage, below 10% on the other hand many manufactures produce pellets by way of between 5-8% moisture. A lower moisture content technique a far more efficient burn, which produces more heat, less ash along with smoke. For example wood chip energy contains around 30% moisture, therefore biomass pellet fires produce a far more efficient process. Although currently biomass holds the spotlight as ‘the pellet fuel’, many other wood resources can also be processed into fuel pellets, see left for examples.
Learn more about Wood Pellet
A pellet mill is the piece of equipment which is used to process wood plus other biomass resources into pellets. Due to a combination of heat plus pressure the pellet mill reforms the material into pellets of a range of different diameters. The pellet construction process however does rely on the right equipment and the right user knowledge. For case in point the raw matter requires certain properties, for example moisture percentage to produce the top quality pellets. Therefore we at PelHeat have developed the Biomass Pellet Production Guide to educate people interested in pellets to the principles of construction. The guide is broken up into a step-with-step guide including diagrams to illustrate what does and what doesn’t work to make quality pellets.
Read more about Softwood Pellet
Premium pellets are a high quality grade of fuel pellets. Premium pellets refers to a quality of biomass pellet fuel manufactured from softwood in addition to hardwood residues. For the softwood premium grade energy pellets pine along with spruce residues are used, plus for hardwood premium grade fuel pellets oak residues are used. For the pellets to meet premium grade requirements several attributes have to be meet. For the premium pellet standard, the ash content of the pellets must be very low, below 1%. To achieve this the species of wood must produce a low ash percentage, but also all, or most of the bark must be removed. To achieve the finest combustion efficiency probable, a low moisture content is required. Premium pellets are therefore required to have a moisture percentage below 10%, however many manufactures manufacture pellets by way of moisture contents between 5-8%. Compare this to seasoned biomass logs which have a moisture percentage around 30%, it is clear how wood pellets achieve much higher incineration temperatures.
For more information on Small Pellet Mill
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